Optical touch system and using method thereof
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United States of America Patent
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Dec 19, 2017
Issued Date -
N/A
app pub date -
Nov 10, 2015
filing date -
Jan 26, 2015
priority date (Note) -
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Abstract
An optical touch system includes a touch surface, a first light source and a first light-sensing unit. The first light source emits a first light. The first light is reflected at positions on a first section of the touch surface to form a first reference section at the first light-sensing unit. The first light is reflected at positions on a second section of the touch surface to form a second reference section at the first light-sensing unit. The second section is located between the first section and the first light-sensing unit. A touch object reflects the first light between the first section and the second section to produce a first input light region on the first reference section, or reflects the first light between the second section and the first light-sensing unit to produce a second input light region on the second reference section.
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